Piston rings for a 221 c.i ?

[36tudordeluxe]

Installing new rings on my 221 that is .060 over and calculate ring gap should be about .013", does this sound about right? Right now on average the rings are a tight .010", so will have to file them a bit. Question: If my engine was a standard bore would standard bore rings have to be file fitted also? Rings weren't filed when the car was manufactured, why now? Question: In the photo there is no manufactures name on my rings, just FORD service replacement rings, are these N.O.S. rings from Ford? Each ring was packaged individually in cosmoline (sp). The second groove compression ring has an inner ring that goes under the ring, was this 30's thinking and not really necessary? Am going to run just 3 rings on my 4 ring pistons, would the third groove be where I place oil control ring or on the very bottom 4th ring groove on the piston?